var

Sets a variable (by name and value), or set of variables (from file or URL) in Ivy.

Variables are case sensitive.

Contrary to Ant properties, Ivy variables are mutable. But a problem with this is that you do not control when
variables are substituted, and usually it is done as soon as possible. So changing the value of a variable will
have no effect if it has already been substituted. Consequently, using this task is NOT recommended.